Synergistic effects of micro-abrasion–corrosion of UNS S30403, S31603 and S32760 stainless steels

Abstract

In this study, the synergistic effects of abrasion and corrosion on UNS S30403, S31603 and S32760 stainless steels have been investigated using a micro-abrasion test rig. The stainless steel samples have been studied under both pure abrasion (PA) and abrasion-corrosion (AC) conditions simulated by using silicon carbide based slurries in either distilled water or 3.5% sodium chloride solutions. Tests have been conducted at various abrasive concentrations (0.006-0.238 g/cm 3 ) and at 38 and 180 m sliding distance to enable the interactions between abrasion and corrosion to be better understood. Wear mode identification and regime mapping was used to establish the dominant wear mechanism at the different slurry concentrations. The synergistic effect has been quantified and related to the material composition and the grooving or rolling abrasive wear mechanisms present. The synergistic levels were typically positive and have been discussed in terms of their dependence on the integrity of the passive films and the repassivation kinetics. The three-body abrasion-corrosion rates for all steels were found to be 14 times higher than two-body abrasion-corrosion rates. S30403 shows weak repassivation performance with electrochemical activity being proportional to mechanical activity. S31603 showed a constant electrochemical activity over a variety of mechanical conditions, indicating a stronger repassivation performance than S30403. S32760 has the best repassivation performance with negative synergistic characteristics until abrasion rate are such that depassivation occurs and the electrochemical activity is then comparable to the other steels.

Tribo-corrosion of coatings: a review

“…Celis et al [26] caution against simple analysis of monitoring the surface open circuit potential (OCP) during tribo-corrosion tests as this analysis requires in-depth understanding of the mechanical, chemical Tribo-corrosion mechanism regime map. Data points used are taken from [42,43,65,66]. and electrochemical effects on OCP.…”

“…Recent research has shown that this solution has difficulties, as Souza and Neville [41] and Bello et al [42] and Thakare et al [43] show, the performance of WC-Co-Cr systems can suffer localized corrosion of the carbide phases, thereby compromising the performance of such surfaces as well as the importance of composition and integrity of Cr based passive films.…”

Different methods of measuring synergy between cavitation erosion and corrosion for nickel aluminium bronze in 3.5% NaCl solution

“…Reports have also been made where the synergy results seemed to be dependent more on techniques and test conditions adopted during the tests as well as the impact of corrosive solution, the material property, and also the type of materials itself. For most alloys and metal samples the most significant impact was found at a mild corrosive environment [25], [26], [34], [40]- [44].…”

“…In a study conducted by Bello, Wood and Wharton [34] on UNS S30403, S31603 and S32760 stainless steel, they attempted to evaluate the synergistic effects of micro-abrasion-corrosion using three approaches. They used two-body, mixed and three-body abrasion methods.…”

Abrasão-Corrosão: Novas Informações a Partir Da Medida Das Forças No Contato

“…Apesar dos estudos via modelagem e da investigação experimental feita para avaliar as interações entre os danos mecânicos e corrosivos, as falhas dos materiais pela ação combinada desses fenômenos ainda não são totalmente compreendidas [9]. Alguns ensaios de abrasão e corrosão separadamente são realizados, com associação desses fenômenos através de tratamento matemático posterior, mas eles apresentam muita dispersão e erros [10]. A fim de se obter resultados mais precisos, o ensaio deve incluir o efeito combinado.…”